Document Sample

Question 1 5 points Save The following table relates the grades in an advanced mathematics course to the student's year in college: Let E be the event that the student received a grade of B. Let F be the event that the student is a sophomore. Find P(F|E). Question 2 5 points Save Calculate the linear correlation coefficient for the following values: (2, 11),(2, 6),(10, 6),(18, 2) -0.83 Question 3 5 points Save A survey revealed that 45% of people are entertained by reading books, 25% by watching TV, and 14% are entertained by both books and TV. What is the probability that a person will be entertained by books given that the person is entertained by TV? Give results to the nearest tenth of a percent. 0.560 Question 4 5 points Save The frequency setting for a garage door opener is determined by the positions of nine switches, each of which can be set to a "+" or "-" position. In how many ways can the switches be set? 512 ways Question 5 5 points Save A student is taking a standardized test consisting of multiple choice questions for which there are five options for each question. Seven points are awarded for each correct answer, but the student loses 2 points for an incorrect answer. Questions left blank neither receive nor lose points. Is it in the student's best interest to guess? no Question 6 5 points Save Using the digits 3, 4, 5, 6, 7, 8, and 9, how many 5-digit numbers can be constructed if the number must begin with an odd digit and digits may not be repeated? 1440 Question 7 5 points Save If two fair dice are rolled, what is the probability that a total of three shows? Question 8 5 points Save Find the line of best fit for the following data. (24, 15), (26, 13), (28, 20), (30, 16), (32, 24) y = 1.05x - 11.8 Question 9 5 points Save A box contains 26 blue marbles, 16 green marbles, and 8 red marbles. Two marbles are selected at random without replacement. Let E be the event that the first marble selected is green. Let F be the event that the second marble selected is green. Find P(F|E) . Question 10 5 points Save Find the mean, median, and mode for the given distribution of 8, 6, 5, 3, 12, 8, 8, 6, 3, 12, 8, 5, 15, 3, 8, 8, 5, 6, 3, 8 Mean = 7, median = 7, mode = 8 Question 11 5 points Save If a card is selected randomly from a standard 52-card deck, what is the probability that we draw a five? Question 12 5 points Save This double-bar graph shows the number of male (M) and female (F) athletes at a university over a four-year period. Which year had the greatest number of female athletes? 1988 Question 13 5 points Save For a school project, Sue interviewed a total of 100 persons who were either lawyers or salesmen. She asked them if they were happy or unhappy with their occupation. Of the 55 lawyers interviewed, 12 were unhappy, however, only 7 of the salesmen were unhappy. Suppose that one of the persons interviewed is selected at random. Find the probability that the person selected is happy. 0.81 Question 14 5 points Save If a single card is drawn from a standard 52-card deck, what is the probability that it is either a six or a club? Question 15 5 points Save The ages of people randomly surveyed on a college campus are summarized in the bar graph. How many people were 24 years old? 2 Question 16 5 points Save Assume that a distribution has a mean of 23 and a standard deviation of 6. What percentage of the values in the distribution do we expect to fall between 23 and 35? Assume that the given distribution is normal. 47.5% Question 17 5 points Save Consider the genetic possibilities for a child of parents who are both carriers of sickle cell anemia. What is the probability that the child will be a carrier of sickle cell anemia? (Solve using a Punnett sqaure) Question 18 5 points Save Professor Kafka teaches an advanced probability class with an enrollment of 11 students. The front row has 9 chairs. A particular student, Carl, must sit in the front row between his tutor, Sue, and his best friend, Pat. In how many different ways can Professor Kafka assign students to sit in the first row? I don’t think this question is clear. 40,320 282,240 141,120 20,160 Question 19 5 points Save A box contains 26 blue marbles, 16 green marbles, and 8 red marbles. Two marbles are selected at random without replacement. Let E be the event that the first marble selected is green. Let F be the event that the second marble selected is green. Find P(F|E) . Question 20 5 points Save 48% of the area under the standard normal curve is above the score. Use a table to find a z-score that fits the given conditions. Interpolate if necessary. 0.05 Question 21 5 points Save Evaluate the expression . 45 Question 22 5 points Save We roll a pair of dice. If the sum of the dice is 7, you pay me $25. If the sum is not 7, I pay you the number of dollars indicated by the sum of the dice. What is your expected value for the game? $1.67 Question 23 5 points Save A survey revealed that 45% of people are entertained by reading books, 25% by watching TV, and 14% are entertained by both books and TV. What is the probability that a person will be entertained by books given that the person is entertained by TV? Give results to the nearest tenth of a percent. 0.560 Question 24 5 points Save We roll a pair of dice. If the sum of the dice is 7, you pay me $25. If the sum is not 7, I pay you the number of dollars indicated by the sum of the dice. What is your expected value for the game? $1.67 Question 25 5 points Save The table lists blood types in a sample of hospital patients. Construct a bar graph for the relative frequency data. Question 26 5 points Save The office manager at an accounting firm counted the number of employees that were in the coffee room each hour during the work week. The results are summarized in the following bar graph. Find the mean and standard deviation of the given data. Round to the nearest tenth, if necessary. Mean = 3.8, standard deviation = 2.6 Question 27 5 points Save Suppose that the mean salary in a particular profession is $45,000 with a standard deviation of $2,000. To what percentile does a salary of $48,000 correspond? 93rd Question 28 5 points Save Assume that a distribution has a mean of 24 and a standard deviation of 6. What percentage of the values in the distribution do we expect to fall below 12? Assume that the given distribution is normal. 2.5% Question 29 5 points Save A pair of fair dice are rolled. Let E be the event that a five shows on the second die. Let F be the event that the total showing is odd. Are E and F dependent events? yes Question 30 5 points Save Construct a box-and-whisker plot for the given data. The test scores of 32 students are listed below. 32 37 41 44 46 48 53 55 57 57 59 63 65 66 68 69 70 71 74 74 75 77 78 79 81 82 83 86 89 92 95 99 Question 31 5 points Save There are 5 people in a club -- Cal, Elissa, Stephanie, Ken, and Pat. In how many ways can a President and a Treasurer be chosen for the club? (No person can hold both positions.) 20 Question 32 5 points Save How many branches are required in a tree diagram showing how many ways three dice could be rolled? 216 Question 33 5 points Save How many different three-digit numbers can you form using the digits 1, 2, 3, 5, 6, 7, and 9 without repetition? 210 Question 34 5 points Save A student is taking a standardized test consisting of multiple choice questions for which there are five options for each question. Four points are awarded for each correct answer, but the student loses 2 points for an incorrect answer. Questions left blank neither receive nor lose points. What is the minimum number of options that the student should be able to rule out before making a guess on any particular question? Two Question 35 5 points Save A law firm has eight male and six female lawyers. A committee of five, two male lawyers and three female lawyers, is to be chosen to represent the firm at a conference. How many committees are possible? 560 Question 36 5 points Save How many different two-digit numbers can you form using the digits 1, 2, 3, 5, 6, 7, and 9 with repetition allowed? 49 Question 37 5 points Save Evaluate the expression P(6, 1) 6 Question 38 5 points Save Find the mean and standard deviation of the given data. (Rounded to the nearest tenth) The following are the heights, in inches, of a group of college students: 72, 68, 62, 64, 66, 74, 70, 60, 63, 67, 69, 67 Mean = 66.8, standard deviation = 4.1 Question 39 5 points Save For a school project, Sue interviewed a total of 100 persons who were either lawyers or salesmen. She asked them if they were happy or unhappy with their occupation. Of the 55 lawyers interviewed, 12 were unhappy, however, only 7 of the salesmen were unhappy. Suppose that one of the persons interviewed is selected at random. Find the probability that the person selected is happy. 0.81 Question 40 5 points Save Find the number of permutations when 6 objects are taken 5 at a time. 720 Question 41 5 points Save If a single card is drawn from a standard 52-card deck, what is the probability that it is either a six or a club? Question 42 5 points Save Seven slips of paper marked with the numbers 1, 2, 3, 4, 5, 6, and 7 are placed in a box and mixed well. Two are drawn. What are the odds that the sum of the numbers on the two selected slips is 7? 1 to 6 Question 43 5 points Save What is the probability that 12 rolls of a die will show exactly three fours? 0.1974 Question 44 5 points Save Assume that in your earth science class you have earned the following test scores: 99, 92, 81, 92; and only one test remains. If you need a mean score of 90 to earn a "A", then what minimum score must you obtain on the last test? 86 Question 45 5 points Save If a card is selected randomly from a standard 52-card deck, what is the probability that we draw a five? Question 46 5 points Save Let M = {S, P, O, M}. List all of the ways that you can select two different members of M. The order in which you select the members is important. SP, SO, SM, PS, PO, PM, OS, OP, OM, MS, MP, MO Question 47 5 points Save How many license plates are possible consisting of 4 letters followed by 4 digits, if the first letter must be a C? 175,760,000 Question 48 5 points Save Find the standard deviation. (Round to one more place than the data) 17, 12, 18, 19, 19, 12, 10, 7, 11 4.4 Question 49 5 points Save The following table relates the grades in an advanced mathematics course to the student's year in college: Let E be the event that the student received a grade of B. Let F be the event that the student is a sophomore. Find P(F|E). Question 50 5 points Save A box contains 3 blue cards numbered 1 through 3, and 4 green cards numbered 1 through 4. List the sample space of picking a blue card followed by a green card. {(1, 1), (1, 2), (1, 3), (1, 4), (2, 1), (2, 2), (2, 3), (2, 4), (3, 1), (3, 2), (3, 3), (3, 4)}

DOCUMENT INFO

Shared By:

Categories:

Tags:
business documents, technology documents, Art & Literature, Vet Assistant, as Soon as, User Manual, asap solution, Prophylactic Treatment, Answer ASAP, Personal Finance

Stats:

views: | 460 |

posted: | 4/30/2010 |

language: | English |

pages: | 11 |

OTHER DOCS BY accinent

How are you planning on using Docstoc?
BUSINESS
PERSONAL

By registering with docstoc.com you agree to our
privacy policy and
terms of service, and to receive content and offer notifications.

Docstoc is the premier online destination to start and grow small businesses. It hosts the best quality and widest selection of professional documents (over 20 million) and resources including expert videos, articles and productivity tools to make every small business better.

Search or Browse for any specific document or resource you need for your business. Or explore our curated resources for Starting a Business, Growing a Business or for Professional Development.

Feel free to Contact Us with any questions you might have.